Multiple Register Data Transfer
<operation>{cond}<mode> Rn{!}, <reglist>
<operation>
LDM- reglist := values at Rn
STM- values at Rn := reglist
<mode> controls how Rn is incremented:
<op>IA- Increment after.
<op>IB- Increment before.
<op>DA- Decrement after.
<op>DB- Decrement before.
<reglist> is the list of registers to load or store. It
can be a comma-separated list or an Rx-Ry style range.
Examples
LDMIA r0, {r3,r7}- Load words addressed by R0 into R3 and R7.
Increment After each load.
LDMIA r0, {r3-r7}- Load words addressed by R0 into R3, R4, R5, R6 and R7.
Increment After each load.
STMDB r1!, {r6-r8}- Store R6,R7,R8 into words addressed by R1.
Write back the final address into R1.
Decrement Before each store.
